Home / 28,120.02-42,164.54-9,390.20

Finding the Fourth Proportional to 28,120.02, 42,164.54 and 9,390.20

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Solution

The fourth proportional to 28,120.02, 42,164.54 and 9,390.20 is: 14,080.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.02 : 42,164.54 = 9,390.20 : x
  2. Step 2: Convert to fraction form
    28,120.02/42,164.54 = 9,390.20/x
  3. Step 3: Cross multiply
    28,120.02x = 42,164.54 × 9,390.20
  4. Step 4: Simplify right side
    28,120.02x = 395,933,205.73
  5. Step 5: Solve for x
    x = 395,933,205.73/28,120.02
  6. Step 6: Final answer
    x = 14,080.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.